Q: Jackie Chan learned some things from watching Bruce Lee because he was a popular kung fu actor in the past.
Who he is?
A: Jackie Chan

Q: Penguins tend to stay on land to avoid killer whales, because they cannot go on land.
Who they is?
A: killer whales

Q: Rob was granted a gun license while Jon was not, because he had passed the background check.
Who he is?
A:
Rob